NO. 2063. NORTH AMERICAN PARASITIC COPEPODS— WILSON. 635 



are tiu'iied forward, or ventrally, at right angles to tlio trmik axis. 

 Furthermore, Blainville's second figure shows that the exopod of the 

 second antennae is segmented, and that the claws on the maxillipeds 

 are chelate. 



Total length, 13 or 14 mm. Length of cephalothorax, 4 mm.; of 

 trunk, 10 mm.; of posterior appendages, 4.5 mm. Width of trunk, 

 5 mm. 



(brongniartii, to Prof. Alexandre Brongniart, of the Faculty of 

 Science at Paris). 



LERNAEOPODA BIDISCALIS Kane. 



Lemaeopoda bidiscalis Ka.ne, 1892, p. 203, pis. 9 and 10. 



RemarJcs. — This species was obtained by Kane from the claspere 

 of male topes, Galeus vulgaris, caught off the coast of Ireland m 1890, 

 and both sexes were admirably described and figured. The female 

 agrees in all essential generic particulars with the one described by 

 Blamville, and the male is taken as the type male of the genus 

 (see pi. 25, fig. B). Attention is called to the fact that in both of 

 these species there is no bulla, and that the posterior processes are 

 foliaceous. In the undeveloped young of both sexes the trunk shows 

 distmct segmentation. 



LERNAEOPODA MUSTELI Thomson. 



Lemaeopoda musteli Thomson, 1889, p. 373, pi. 28, figs. 9 and 9a. 

 Achtheres galei Brian, 1906, p. 101. 



Remarks, — This species was described by Thomson from a single 

 specimen taken from the cloaca of the smooth hound, Mustelus 

 antarcticus, near New Zealand. Neither the description nor the 

 figures give us sufficient data for a definite location of the species. 

 We have no details of any of the appendages or mouth parts, and 

 the smgle figure (9a) of the under surface of the cephalothorax is so 

 small that it gives only the relative position of the various organs. 

 Brian in the reference given above makes this species, Richiardi's 

 Lemaeopoda scyllii, and Kurz's Achtheres selachiorum, all synjnyms 

 of Ki-0yer's Lemaeopoda galei, but he changes the genus of Kr0yer's 

 species and calls it Achtheres galei. The male of L. galei shows con- 

 clusively that it can not be mcluded in the genus Achtheres, and the 

 absence of an abdomen and the presence of posterior processes in the 

 females of the other species debar them from the same genus. The 

 only thing that we can do with this species described by Thomson 

 is to leave it where he placed it until we can get further details. 



LERNAEOPODA GALEI Kr)«yer. 



Lemaeopoda galei Kr0yer, 1837, p. 272, pi. 3, fig. 5, a to/. — Baird, 1850, p. 334, pi. 

 35, fig. 7.— T. Scott, 1900, p. 172, pi. 8, figs. 16 to 25. 



Host ami record of specimens. — In the collection of the United States 

 National Museum there is a single female of this species, with attached 

 males. They were taken from a smooth hound at Cornwall, England, 

 and were obtained by exchange from Rev. A. M. Norman; they are 

 numbeied S34G, U.S.N.M. 



