112 THE PLUMULARIDJE. 



G. compressus has the most conspicuous and even marginal teeth of any species of the genus 

 that -I have seen. 



Type. In the Museum of Comparative /oology, Cambridge, Massachusetts. 



CLADOCARPUS VENTRICOSUS Allman. 



(Plate XXVI, figs. 6-8.) 

 Cladocarpus ventricomis ALLMAN, Mem. Mus. Corap. Zool., 1877, V, No. 2, p. 52, pi. xxxi. 



Trophosome. Stem attaining a height of about an inch and a half, not fascicled, simple; 

 iiu alternate, each springing from a rather long lateral process of the stem, somewhat waved. 

 Hydrotheca' distant; front wall with a depression just below the margin, then greatly inflated; 

 margin with a long, strong tooth in front, and with shallow en-nations in the rest of its extent; 

 intrathecal ridge strong, transverse, springing from a projection of the posterior wall of the 

 hydrotheca near its fundus, and reaching a point about midway between this and the anterior 

 wall. Supracalyciue nematophores scarcely overtopping the hydrotheca; mesial uematophore 

 quite detached from the hydrotheca. 



Gonosome. Phylactogonia springing from the proximal internodcs of a certain number of the 

 pimi;e, which are situated near the distal end of the stem, twice bifurcating; gonangia springing 

 from the stem in groups, each group close to the axil of a pinna, obovate, with the summit 

 curved over the termiuo-lateral orifice. 



Dredged off Sand Key from a depth of 100 fathoms. 



1 have not seen this species, and have therefore quoted the original description entire. 



Type. In the Museum of Comparative Zoology, Cambridge, Massachusetts. 



CLADOCARPUS FLEXILIS Verrill. 



(Plate XXVI, figs. 9-12.) 

 Cladticarpus H<s.rilis VKUKILL, Report <>( Commissioner of Fish and Fisheries, !X8.'i, p.M7. pi. ix, lig. 29. 



Trophosome. Colony long, slender, sparsely branching, attaining a height of about 9 inches; 

 stem not fascicled; hydrocladia rather distant, slightly sinuous, divided into rather slender 

 iuteruodes, each of which -has a number (seven or eight) septal ridges back of the hydrotheca. 

 Hydrotheca- deep, tubular, anterior profile nearly straight; margin not expanded, with a single 

 strong anterior tooth, and four or live minute lateral sinuatious; iutrathecal ridge hardly evident; 

 supracalycine uematophores tubular, small, overtopping the hydrotheca; mesial nematophore 

 short, separated from the hydrotheca ; two cauline uematophores at the base of each hydrocladium, 

 and one on the front of each iuternode of the stem. 



Gonosome. Gonangia numerous, borne on the front of the stem and bases of the hydrocladia, 

 oblong-ovate, with a lunate latero-terminal orifice; phylactogonia like stag's horns, with three 

 branches, inserted on the proximal internode of each hydrocladium. 



Distribution Fish Hawk Station 865, Lat. N. 40 05', long. W. 70 23'; depth, 65 fathoms; 

 Fish Hawk Station .S6C, lat, N. 40 05', long. W. 70 22' ; depth, 65 fathoms ; Fish Hawk Station 807, 

 lat. N. 40 06', long. W. 70" 22'; depth, 64 fathoms; Fish Hawk Station 940, lat, N. 39 54', long. 

 W. 69 52'; depth, 134 fathoms; Fish Hawk Station 950, lat. N. 40 07', long. W. 70 32': depth, 71 

 fathoms ; Fish Hawk Station 1027, lat. N. 40 00', long. W. 69 19' ; depth, 93 fathoms ; Fixh Hawk 

 Station 1109, lat. N. 40 03', long. W. 70 38'; depth, 89 fathoms; Albntroxx Station 2005, lat. N. 37 

 18', long. W. 74 28'; depth, 82 fathoms; Albatmxx Station 2012, lat. N. 36 41', long. W. 74 40'; 

 depth, 66i fathoms; Albatross Station 2085, lat. N. 40 05', long. W. 70 35'; depth, 70 fathoms; 

 Albatross Station 22fi4, lat. N. 37 08', long. W. 74 34' ; depth, 167 fathoms ; Albatross Station 2265, 

 lat. N. 37 08', long. W. 74 36' ; depth, 70 fathoms ; Alhatmxs Station 2387, lat. N. 29 24', long. W. 

 88 04'; depth, 32 fathoms; Albatross Station 2:588, lat. N. 29 25', long. W. 88 01'; depth, 35 

 fathoms; Albatross Station 2389, lat. X. 29 28', long. W. 87 56'; depth, 27 fathoms. 



Professor Verrill informs me that Cladocarpus Jfe.rilis is the most common species taken by 

 the Fish Commission off Vineyard Sound in the warm zone (80 to 150 fathoms). 



The hydrotheca- vary considerably in size in different specimens, but their shape remains 

 constant and will easily distinguish this species. 



Type. In the museum of Yale University. 



