NO. 1371. 



NEW DRA GON-FLY NYMPHS -NEEDHAM. 697 



Doctor Haoen iiientionod nndcr this specitic namo tlircc nymphs 

 from California," which agree with tliis one in the only diaoiiostir 

 character stated— the absence of lateral spines from abdominal seo- 

 ments. Doctor Hao-en did not describe the form of the median l<.b.> <.f 

 the labium carefully or mention the raptorial seta- at all. 



CORDULEGASTER DIADEMA Selys? 



'q^right Angel. Ariz.. .luly \± H. S. Barl)er, colh-ctor." ^ 

 Male. Length. 35 mm.; a])domen, 23 mm.: hind femur. . mm.: 



width of head. S mm. : of abdomen, S mm. 



Body rough, hairy all over: head with ])r()min('nt eyes luiteriorly: 



sides behind them at lirst parallel then abruptly narrowed to^ the 



straight hind margin, before which is a pair of large scars. 1^ rons 



with'^a shelf-like prominence fringed with stiff 



yellow hairs. Antenna^ short, third segment as 



"long as the first and second together, fourth half 



as long, and the remaining segments successively 



shorter. Labium ample: median lo],e with tlu> ^^^^^ _^,^^^^^^ ,,^^„^^^. 



usual bifid tubercle (fig. \(() at its apex, each lialt .^,,„.j.j, „^. j„i,i„.e ,.„bk 



of which i.s again i.iHd (as in c ,/;„xfau.p^) th. •;;-»;;;■-„■;--■;„:;; 



lower tooth hardly rising above the level ot the pem.v, mn c. dorsai.is. 

 f rino-e of hairs at the sides. Lateral seta- 5: men- 

 tal .itffi 8-9 each side, the four out.n-most constituting a separate and 



stronger series. i i. i • 



Abdomen regularlv tapering, without dorsal hooks or lateral spines, 

 with the usual apical fringes of incurved hairs on segments 2-9: 

 appendages longer than segments 9 and In together, the laterals one- 

 fifth to one-fourth as long as the others. 



After the above description was written Mr. Currie sent me from 

 the National .Museum another specimen-a cast skin left by a nymph 

 at transformation.* This, he suggested, should belong to ( . dnaimuu 

 since the imago of that species was collected in the same locality It 

 agrees closelv with the younger nymph above described, except tor 

 krger size. ' Length. 47 mm.: abdomen, M mm.: hind femur. > mm.: 

 width of head 9 mm.: of abdomen. 9 mm. 



The wing cases reach only the fourth abch.minal segment and there 

 are shaggv locks of hair on the sides of the body below them. h. 

 ninth s^uent is shorter on the ventral side, and tlie tcmth -^"-^ is 

 shorter on the dorsal side than prec<Mling segments. The end ot 1 . 

 abdomen is uearlv destitute of stiff hairs, which abundantly tnnoe tlu 

 hioh apical carime of the middle and basal segments 



Air. F. C, WiUard sent me a ca.<t nymphal skm ot tins spec.es trom 

 Tombstone, Arizona, in 1897 



« Trans. Amer. Entom. Soc, XII, 188o, p. 2S!1. 



^Thi. i. tlu" .mo mentioned l.y him in Pm... Knt. S..-.. \N aslun-.M-m, \ . l.HU, i 



:!0.s. 



