L78 THE MTRIAPODA OF NORTH AMERICA. 



M. LIMATDS, Wood, Joutd. A. N. S., new series, vol. v, 1803, p. 42. 



The alcohol in which the specimens were preserved having evaporated, they are in 

 such a condition thai I can only guess at the original color of the body and feet. The 

 scuto-episcutal sutures are very distinct, as well as the subsegmental sutures of each fully- 

 tunned segment. The sterna are furnished with a median sulcus, deeply marked on the 

 posterior, but obsolescent on the anterior portion of most of them. Length, 2i inches. 



IIi'li. California. — Smithsonian Collection. 



Genus GEOPHILUS, Leach* 



tegmentum cephalieuro subquadratum. Segmentum prebasale baud sejunctuiu, sed basali absolute coalituin. 

 Segment! basalis margo posticus antico multo longior. Segmentum subbasale sejunctum. Mandibular modicse, 

 interdum denticulatae. Antenna? eapite multo longiores, subapproximatae, artieulis inaequalibus. Labium ple- 

 rumque emarginatum. (Fig. 19.) 



Cephalic segment subquadrate. Prebasal segment not separate, but entirely eoaleseent with the basal. Posterior 

 margin of the -basal segment much longer than the anterior. Subbasal segment separate. Man- 

 dibles moderate, sometimes denticulate. Antennae much longer than the head, subapproximate, their 

 joints unequal. Labium generally emarginate. 



Geophilus lonqicornes, Gervais, Apt. iv, p. 313. 



Necropiil/Eopiiacus, Newport, Proc. Zool. Soc, 1842, p. 180. 



Arthronomalus, Newport, Linn. Trans., six, p. 430 ; et Catal. Brit. Mus. Myriap., p. 83; baud 



Geophilus Newport et imitatores. 



• 

 Since Geophihis carpop7tayus is the type of the original genus as instituted by Dr. Leach, 



the name Geophilus must be used for this section, to which G. carpqphagua belongs, and 



not for that to which Mr. Newport applies it. Air. Gervais does not adopt any of these 



genera, much to my surprise, for they appear to me as clearly and even beautifully defined 



as almost any that 1 have ever seen. 



(J. OEPHALICU8. 



<i. antice obscure aurantiacus, postice saturate olivaceus; eapite magno, latissimo, saturate aurantiaco; segmento 

 cephalico antice baud emarginato, sparse inordinatim punctato, marginibus lateralibus arcuatis; antennis modice 

 longis, valde pilosis; Iabio sparse inordinatim punctato, medio canalicular, antice e rginato; pedibus longis, flave- 



ntibus, pilosis, utrinque I s ; suturis scuto-episcutalibus conspicuis ; superficie ventrali, antic aurantiaca, postice 

 saturate olivacea; sternis suturis stewio-episternalibus et depressione mediana impressis. 



^nteriorl3 obscur ange, posteriorly dec,, olive; head large, very broad, deep orange; cephalic segment 



' Linn. Trans., vol. ,\i, p 38 I 



