NO. 1162. BBACRYUBA COLLECTED B Y THE ALBA TROSS—BA THB UN. T) 6 9 



2. PODOCHELA HEMPHILLII (Lockington). 



Microrhiinchm hemphillii Lockington, Proc. Cal. Acad. Sci., February 7, 1876, 



1877, VII, p. 30. Bay of San Diogo. 

 Inachoides {Mlcrorhynchus) hemphillU Lockington, Proc. Cal. Acad. Sci., Ju]yl7, 



1876, 1877, VII, p. 75 (13). 

 Podochela tetiuipes Ratiibun, Proc. U. S. Nat. Mus., 1893, XVI, p. 224. 



Southern part of Gulf of California; off Cape St. Lucas and Magda- 

 lena Bay, Lower California, 10 to 31 fathoms (stations 2828,2829, 2831). 



Mr. Samuel J. Holmes has examined the tyi>e of Microrhy^ichns liemp- 

 hillii Lockington and pronounces it the same as Podochela tenuipes. 



3. COLLODES GRANOSUS Stimpson. 



Collodes (/ranosun Stimpson, Ann. Lye. Nat. Hist. N. Y., 1860, VII, p. 194, pi. ii, 

 fig. 4. 



Southern part of the Gulf of California, 10 fathoms, station 2828. 



4. COLLODES ROSTRATUS A. Milne-Edwards. 



Collodes rostratus A. Milne-Edwards, Crust. Keg. Mex., 1878, p. 179; 1879, pi. 

 xxxii, fig. 2. 



Off the llio de la Plata, lOi fathoms, and off the Gulf of San Matias, 

 Argentina, 52 fathoms (stations 27C6 and 27G7). 



5. COLLODES TENUIROSTRIS Rathbun. 

 Collodes tenuirosiris Eatiibun, Proc. IT. S. Nat. ISIus., 1893, XVI, p. 230. 



Magdalena Bay, 51 fathoms, and off Abreojos Point, Lower Califor- 

 nia, 48 fathoms (stations 2833 and 2834). 



6. COLLODES TUMIDUS, new species. 

 (Plate XLI, fig. 1.) 



Allied to C. inermis; carapace with four elevated tubercles forming a 

 cross near the middle. 



This species is the Pacific representative of G. inermis, from which it 

 differs only slightly, and with the type of which it has been compared. 

 The carapace bears near its middle four tubercles, of which two are on 

 the median line, one gastric and one cardiac, and the other two are at 

 the inner angles of the branchial regions. These tubercles are at the 

 most elevated portions of the carapace, the gastric region being inter- 

 mediate in height between the cardiac and branchial. In the female, 

 the cardiac tubercle is longer and appears like the base of a stout spine 

 which has been broken oft". In C. inermis the inner angle of the 

 branchial region is depressed. In tumidus the granulation of the pos- 

 terior and lateral regions is less extensive than in inermis, there being 

 almost no granules on the cardiac region. 



The front, like that oi inermis, \^ furnished with two blunt teeth near 

 together. The postorbital tooth is subtriangular and slightly curved. 



