NOTES AND MEMORANDA. 425 



characters of the abdominal termination of the body, and by the pre- 

 sence on the thoracic appendages of hair-like setfe. 



They have been obtained from below stones on the sea-shore, from 

 the stomachs of a fish and of a Medusa, and from a mass of Fucus. 

 The paper is illustrated by a plate. 



On the Crustacea of the Mozambique. — The collection of Dr. 

 Peters is described * by Hilgendorf in great detail, and illustrated by 

 four plates, but the whole paper is too technical to allow of any brief 

 account. It may be mentioned, however, that the number of known 

 species from this region is multiplied by more than 4, — 27 now be- 

 coming 128. Of the 101 forms new to this region, only one genus — 

 Podopisa, one new sub-genus — Myomenippe, and seventeen new species 

 are recorded. The only other collector in this region appears to have 

 been Bianconi, and the importance of it to carcinology cannot be over- 

 estimated. The new genus appears to be intermediate between the 

 MacrojwdidiB and the Maiadce. 



Vermes. 



Pneumonia produced by a Filarian Worm. — M. Megnin has 

 discovered f a new worm, which he proposes to call Strongylus minii- 

 tissimus ; this creature was observed by him in some African sheep 

 which were brought over to Vincennes, and which suffered from puru- 

 lent abscesses on the lung, although the bronchi were completely 

 healthy. Clearly allied to Strongylus filaria, it differs from it by its 

 much smaller size — 1 (male) to 1^ (female) centimetre, while the 

 tail is very short, and the embryo is provided with a short caudal pro- 

 longation : the habits also are different ; the fecundated females 

 become encysted in the pulmonary tissue, where they die after giving 

 birth to the embryos, which escape by the bronchi ; the dead give rise 

 to inflammatory processes in the lung. Development appears to obtain 

 externally to the host, just as in Strongylus filaria, and other pests of 

 the fowl, and Oxyuris incurvata and Strongylus armatus of the horse. 

 Ova and embryos placed in damp earth were found living after fifteen 

 days, but no other changes have yet been observed ; further investiga- 

 tions on the subject are, however, promised.^ 



On Sagitella (Wagner).— Although M. Uljanin states that what 

 observations he has to offer § on this interesting annelid are merely 

 rough notes, they are of sufficient value to demand very careful atten- 

 tion. 



Tegumentary System. — The cuticle is a fine, transparent, strong 

 membrane, which may or may not be striated ; it does not appear to 

 cover the anterior part of the buccal segment or the elytra ; the greater 

 part of the hypodermis is made up of a very fine protoplasmic layer, 



* ' MB. Preuss. Akad. Wiss.' (Nov. 1878), 782. 

 t ' Bull. Soc. Centrale Ve'tenDaire ' (1877), 646. 

 X ' Jouni. Anat. et Phys.' (Robin), xiv. (1878) 548. 

 § 'Arch. Zool. Expe'r. et Gen.,' vii. (1878) 1. 



