BY CHARLES II. UOLLMAN. 



In tliis paper I have given the synonymy of the various species and 

 analytical keys whereby* they may be determined. 



As numerous attempts have been made to divide this family into 

 smaller groups, I have given keys for all the subfamilies and genera 

 known to date. 



Family SCOLOPENDBID.E. 

 1844. Scolopendridce Newport. Trans. Linn. Soc., 275 and 374. 



The Scolopendridse are Chilopoda belonging to the order Epimorpha 

 and are characterized by having 2L-23 pairs of legs, 17-33-jointed 

 antenna?, 9, 10, or 19 pairs of spiracles, and the pleurae of anal pair of 

 legs scutelliform. 



They may be divided into the following subfamilies : 



a. Pairs of legs 21. 



b. Tarsi, except that of anal pair, Inarticulate; pairs of spiracles 19; ocelli absent. 



PLUTONIIX.E. I. 

 bb. Tarsi, except that of penultimate and anal pairs, Inarticulate; pairs of spiracles 



10 ; ocelli absent or single CRYPTOPIN^E. II. 



bbb. Tarsi of all the legs triarticnlate; pairs of spiracles 9 or 10; ocelli 4. 



SCOLOPENDRIN.E. III. 



an. Pairs of legs 23; tarsi, except that of anal and penultimate pairs, biarticnlate; 

 pairs of spiracles 10 ; ocelli absent or 4 SCOLOPENDROPSINJE. IV. 



Subfamily I. PLUTONIINJE. 



1881. Soolopendridce plusipstigmi Cavanna. Bull. Ent. Ital., 176. 

 This subfamily only includes the European genus Plutonium. 



Subfamily II. CRYPTOPIN^E. 



1844. Scolopendrinw Newport. Trans. Linn. Soc., 378 (in part). 

 ISll. Scolopendricles morsicantes flervais. Apteres, IV, 243 and 250 



(in purt). 

 1881. Cryptopxii Kohlrausch. Archiv f. Naturg. 



Analysis of yencra of Cryptopince. 



a. Last dorsal plate normal; anal pair of legs not crassate. 



ft. Ocelli absent CuYPTOPs. I. 



bb. Ocelli present, single EREMOPS.* 



aa. Last dorsal plate twice as large as the preceding; anal pair of legs short and 

 thick ; ocelli absent THEATOPS. II. 



* Erenioji* num. gen. uov. for Monops Gervais, which is preoccupied. Deriv. : tpr],uo<;, 

 lonely; uiji, an eye. 

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