396 



BULLETIN OF THE BUREAU OF FISHERIES. 



fifth as long as the telson. Eyes rather large and with a prominent, conical, black protuberance on the 

 cornea. Antennae about twice as long as carapace. Third maxillipeds with the meral and carpal articles 

 very broad, closing the whole front of the buccal region, the two terminal articles slender and extended 

 straight forward. Second pair of legs much stronger than the first, exceeding the rostrum by the length 



of the hand; fingers more than half as long as 

 the palm. 



Length, about 21 mm.; carapace, 8 mm.; 

 rostrum, 2 mm.; hand, 5 mm. 



Color: Cephalothorax and abdomen dark 

 brownish-red, telson and tail fins white, eye- 

 stalks and pedtincles of antennae and antennules 

 white, flagella of antennae and antenjiules and 

 bands on legs purple. 



Only one specimen, an ovigerous female, 

 has been collected. It was obtained by the 

 Fish Hawk and brought to the laboratory pre- 

 served in formalin, but was not noticed until 

 some days later. The color notes were made at 

 once and the specimen transferred to alcohol. 

 Within a few days a spotting or mottling of the 

 surface began to appear, which by the end of the 

 summer had become quite pronounced, but the 

 spots do not have the arrangement described by 

 has there been a suggestion of the bands of 



Fig. 14. — Gnathcpkyllum modesium, type, 9 X454. 



Dorsal view of cephalothorax: b, carapace, lateral view; 

 telson and uropods. 



Faxon in the species G. panamense. At no time 

 color described by Dr. Mary J. Rathbun in G. americanum. 



A careful comparison of the Beaufort specimen with the two species mentioned and with G. elegans 

 shows it to be distinct. It is probably most closely related to G. panamense. which it resembles in 

 color pattern, and with which it agrees in length of rostrum and number of rostral teeth. It differs 

 from all hitherto known species, however, in the arrangement of the spines at the tip of the telson. 

 It, furthermore, differs from G. panamense in the length of the longer spines at the tip of the telson, 

 in the longer fingers and longer wrist. From G. americanum it differs in color and in the much weaker 

 second pair of legs. 



Family CRAGONIDAE. 



Caridea having the first pair of legs subchelate, the carpus of the second pair not 

 subdivided, the rostrum short and not compressed and the second maxillipeds with a 

 very short seventh article. 



This family comprises 13 genera of which only i, Crago, occurs in the Beaufort 

 region. 



Genus CRAGO Lamaick. 



Crago Lamarck, 1801, p. 159. 



Crangon Fabricius, 1798, p. 387. (Not Crangon Weber, 179s.) 



Crago septemspinosus (Say). Northern shrimp. PI. xxvii, fig. 9. 



Crangon septemspirwsum Say, 1818, p. 246. 



Crangon vulgaris, Verrill and Smith, 1875, p. 550: R. Rathbim. 1S84, p. S16; Paulmier, 1905, p. 131. 



Crangon crangon and Crangon vulgaris of authors (in part). 



Crago septemspinosus Fowler, 1912, p. 320, pi. 93; Sumner, 191 1, p. 664. 



Integument moderately firm, polished, translucent. Carapace subcylindrical, its dorsal surface 

 with a small appressed spine back of the rostrum; anterior margin with the suborbital angle slightly 

 and the subantennal angle strongly produced, the latter almost spiniform and with a minute spine below 

 it; lateral spine of carapace well developed; anterior part of side of carapace with two impressed lines 



