CRUSTACEA OF ALABAMA. 27 



of questionable value in identification. The following points also serve to distinguish it 

 from the species identified with the European C. virens. The post-abdominal rami are 

 not serrate behind, the setae are not pectinate, the anterior of the three one-jointed lobes 

 of the maxilla has two pinnatifiid processes as well as simple stout spines. 



Cypris altissimus, chambers. 



Undoubtedly this is closely allied with the above. It is said to closely agree with 

 C. virens, but to be less distinctly reniform and more elongate, with extremities more 

 nearly equally rounded. The antennae are described as follows : 



" There are two short setae (one longer than the other) from the third joint ; two 

 short and two long ones from fourth joint ; three long ones and one short one from the 

 last joint. Color bright deep green." 



The specimens come from a pond fed by melting snow on the side of Mount Elbert, 

 Colorado, at a height of about 12,000 feet. 



Cypris perelegans, S P- »■ 



(Plate III, Figs. 7-12.) 



Carapace of largest size, elongate sub-oblong, sides nearly parallel, upper margin 

 nearly straight, lower outline with two sinuses and two slight convexities, produced to 

 form a slight tooth behind ; greatest height at one-fourth the length from the posterior, 

 equal to less than one-half the length ; width greatest somewhat in advance of the mid- 

 dle, about four-tenths the length ; color clear, pale yellow, with a well defined pattern in 

 deep brown, pattern consisting of a sigmoid band crossing the middle of the valves, giv- 

 ing off spurs at each flexture, and sundry other spots, as well as an anterior marginal 

 band ; surface shining, minutely dotted, slightly hairy at the margins ; lucid spots con- 

 sisting of two large irregularly pentagonal approximated spots, with three smaller ones 

 grouped below ; appendages very similar to C. virens ; antennae seven-jointed, slender, 

 basal segment very large, third elongated, four succeeding nearly equal in length, fourth 

 and fifth segments each with two long setae above, sixth with four long and one shorter 

 setae, apical segment with four very long setae, fifth segment with two setae of moderate 

 length below ; antennules slender, apical segment with two serrate claws and two slen- 

 der setae, fourth (antepenult) segment the same, third segment with four very long and 

 two shorter setae, second segment with six long pectinate setae reaching to end of ter- 

 minal claws; labrum with claw-like appendages bearing seven teeth, the inner being double, 

 medianly the labrum appendaged with pectinate plates ; the mandible furnished with 

 six strong teeth, two pectinate setae and several small spines, the palp being well-devel- 

 oped ; second maxilla with short lobes, the anterior of the 1 -jointed lobes with four very 

 strong toothed spines ; first foot with five segments, the apical one being very small and 

 bearing a single very long serrated claw, the third and fourth are equal and much more 

 slender than the second ; second foot slender, apical segment with two small claws and 



